@article{ref1,
title="Neural mechanisms of post-error adjustments of decision policy in parietal cortex",
journal="Neuron",
year="2016",
author="Purcell, Braden A. and Kiani, Roozbeh",
volume="89",
number="3",
pages="658-671",
abstract="Humans often slow down after mistakes (post-error slowing [PES]), but the neural mechanism and adaptive role of PES remain controversial. We studied changes in the neural mechanisms of decision making after errors in humans and monkeys that performed a motion direction discrimination task. We found that PES is mediated by two factors: a reduction in sensitivity to sensory information and an increase in the decision bound. Both effects are implemented through dynamic changes in the decision-making process. Neuronal responses in the monkey lateral intraparietal area revealed that bound changes are implemented by decreasing an evidence-independent urgency signal. They also revealed a reduction in the rate of evidence accumulation, reflecting reduced sensitivity. These changes in the bound and sensitivity provide a quantitative account of choices and response times. We suggest that PES reflects an adaptive increase of decision bound in anticipation of maladaptive reductions in sensitivity to incoming evidence.<p /> <p>Language: en</p>",
language="en",
issn="0896-6273",
doi="10.1016/j.neuron.2015.12.027",
url="http://dx.doi.org/10.1016/j.neuron.2015.12.027"
}